[gjs] jsapi-util-string: Clean up gjs_string_from_utf8() to use early return

[Philip Chimento <pchimento src gnome org>]

commit 2bf42756288173310c261488c70d2383619665f3
Author: Evan Welsh <contact evanwelsh com>
Date:   Sun Jun 13 18:11:55 2021 -0700

    jsapi-util-string: Clean up gjs_string_from_utf8() to use early return

 gjs/jsapi-util-string.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/gjs/jsapi-util-string.cpp b/gjs/jsapi-util-string.cpp
index b2ea9f3d..e5de20c2 100644
--- a/gjs/jsapi-util-string.cpp
+++ b/gjs/jsapi-util-string.cpp
@@ -99,10 +99,11 @@ gjs_string_from_utf8(JSContext             *context,
 {
     JS::ConstUTF8CharsZ chars(utf8_string, strlen(utf8_string));
     JS::RootedString str(context, JS_NewStringCopyUTF8Z(context, chars));
-    if (str)
-        value_p.setString(str);
+    if (!str)
+        return false;
 
-    return str != nullptr;
+    value_p.setString(str);
+    return true;
 }
 
 bool